/* ==========================================================================
   Home - Hero
   ========================================================================== */

.hero {
  padding-block: 8rem 5rem;
  padding-inline: var(--container-padding-x);
}

.hero__inner {
  max-width: var(--max-width-content);
  margin-inline: auto;
  text-align: center;
}

.hero__title {
  margin-bottom: 1.25rem;
}

.hero__description {
  margin-top: 0.8rem;
  margin-bottom: 2rem;
  font-size: var(--fs-medium);
  color: var(--color-text);
  line-height: var(--lh-loose);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

.hero__meta {
  margin-top: 2rem;
  text-align: center;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--color-gray-400);
}

.hero__meta-disciplines {
  font-weight: var(--fw-medium);
  color: var(--color-gray-600);
}

@media (max-width: 991px) {
  .hero { padding-block: 5rem 3rem; }
  .hero__meta { font-size: 0.8125rem; }
}

/* Page hero variant — left-aligned, compact gap before the next section
   (used on Service / Process). */
.hero--page {
  padding-block: 7rem 1.5rem;
}

.hero--page .hero__inner {
  max-width: 105rem;
  text-align: left;
}

.section-about.section-about--flush-top {
  padding-top: 1.5rem;
}

@media (max-width: 991px) {
  .hero--page { padding-block: 4.5rem 1rem; }
  .section-about.section-about--flush-top { padding-top: 1rem; }
}

/* ==========================================================================
   Home - Design Preview (horizontal scroll showcase)
   ========================================================================== */

.design-preview {
  padding-block: 4rem 5rem;
}

.design-preview__container {
  width: 100%;
  max-width: var(--max-width-page);
  margin-inline: auto;
  padding-inline: var(--container-padding-x);
}

.design-preview__header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.design-preview__intro {
  max-width: 36rem;
}

.design-preview__title {
  margin: 0 0 0.5rem;
  font-size: 2rem;
  font-weight: var(--fw-medium);
  line-height: var(--lh-tight);
}

.design-preview__sub {
  font-size: var(--fs-medium);
  color: var(--color-text);
  line-height: var(--lh-loose);
}

.design-preview__nav {
  display: flex;
  gap: 0.5rem;
}

.design-preview__btn {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--color-gray-200);
  background-color: var(--color-white);
  color: var(--color-black);
  transition: background-color var(--duration-base) var(--ease),
              border-color var(--duration-base) var(--ease),
              opacity var(--duration-base) var(--ease);
}

.design-preview__btn:hover { background-color: var(--color-gray-100); }
.design-preview__btn:active { background-color: var(--color-gray-softer); }

.design-preview__btn svg {
  width: 18px;
  height: 18px;
}

/* Viewport: wraps the track and provides edge fade gradients */
.design-preview__viewport {
  position: relative;
  width: 100%;
  max-width: var(--max-width-page);
  margin-inline: auto;
}

.design-preview__viewport::before,
.design-preview__viewport::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: var(--container-padding-x);
  pointer-events: none;
  z-index: 2;
}

.design-preview__viewport::before {
  left: 0;
  background: linear-gradient(to right,
    var(--color-white) 30%,
    rgba(255, 255, 255, 0));
}

.design-preview__viewport::after {
  right: 0;
  background: linear-gradient(to left,
    var(--color-white) 30%,
    rgba(255, 255, 255, 0));
}

/* The horizontal scroll track */
.design-preview__track {
  display: flex;
  gap: 1rem;
  margin: 0;
  padding: 4px var(--container-padding-x);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-padding-inline: var(--container-padding-x);
  scrollbar-width: none;
  -ms-overflow-style: none;
  cursor: grab;
  list-style: none;
}

.design-preview__track::-webkit-scrollbar { display: none; }

.design-preview__track.is-dragging {
  cursor: grabbing;
  scroll-behavior: auto;
  user-select: none;
}

/* The <li> wrapper is the actual flex item — drives uniform card width */
.design-preview__track > li {
  flex: 0 0 25%; /* 30% smaller than the previous 36% */
  scroll-snap-align: start;
  list-style: none;
}

/* Cards */
.preview-card {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  width: 100%;
  color: inherit;
  text-decoration: none;
  cursor: pointer;
  outline: none;
}

.preview-card:focus-visible .preview-card__media {
  box-shadow: 0 0 0 3px rgba(90, 87, 255, 0.35);
}

.preview-card__media {
  aspect-ratio: 4 / 3;
  border-radius: 8px;
  overflow: hidden;
  /* outline sits just outside the rounded edge so it always reads against
     the page background, regardless of the image's edge brightness. */
  outline: 1px solid #f2f2f2;
  outline-offset: 0;
}

.preview-card__image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;       /* fill the card; crop overflow as needed */
  object-position: center;
  transition: transform 0.5s var(--ease);
  pointer-events: none;    /* prevent native image drag from blocking the track drag */
  /* Smooth high-quality downsampling on high-DPI displays to avoid the
     jagged/aliased look that comes from large PNGs being shown small. */
  image-rendering: auto;
  image-rendering: -webkit-optimize-contrast; /* WebKit fallback */
  image-rendering: high-quality;              /* Chrome 96+/Edge/Safari 15.4+ */
  -ms-interpolation-mode: bicubic;
  will-change: transform;                     /* hint GPU compositing */
}

.preview-card:hover .preview-card__image {
  transform: scale(1.04);
}

.preview-card__label {
  padding-inline: 0.5rem;
  font-size: 0.875rem;
  font-weight: var(--fw-medium);
  color: var(--color-gray-600);
  letter-spacing: 0.02em;
}

@media (max-width: 991px) {
  .design-preview { padding-block: 3rem 4rem; }
  .design-preview__header { margin-bottom: 1.75rem; }
  .design-preview__title { font-size: 1.75rem; }
  .design-preview__nav { display: none; } /* native touch scroll on mobile */

  /* Tablet: ~2.2 cards visible (was effectively 4 because the rule below
     targeted the wrong element) */
  .design-preview__track > li { flex: 0 0 44%; }
  .preview-card__media { border-radius: 6px; }
}

@media (max-width: 479px) {
  /* Mobile: ~1.3 cards with a peek of the next card to invite scroll */
  .design-preview__track > li { flex: 0 0 72%; }
  .preview-card__media { border-radius: 5px; }
}

/* ==========================================================================
   Home - Projects section
   ========================================================================== */

.section-projects {
  padding-block: 4rem 6rem;
  padding-inline: var(--container-padding-x);
}

.section-projects__heading {
  margin: 0 auto 3rem;
  max-width: var(--max-width-page);
  font-size: 2rem;
  font-weight: var(--fw-medium);
}

.project-grid {
  display: flex;
  gap: 3rem;
  max-width: var(--max-width-page);
  margin-inline: auto;
}

.project-grid__col {
  flex: 1 1 0;
  min-width: 0; /* allow flex children to shrink below their content size */
  display: flex;
  flex-direction: column;
  gap: 4rem;
}

.project-grid__col > .project-card {
  height: auto; /* natural height based on image aspect ratio */
}

/* When the filter empties a column, hide it and keep the remaining column at
   half width so its cards naturally shift to the left edge of the grid. */
.project-grid__col.is-empty {
  display: none;
}

.project-grid:has(.project-grid__col.is-empty) .project-grid__col {
  flex: 0 0 calc((100% - 3rem) / 2);
}

@media (max-width: 991px) {
  .project-grid {
    flex-direction: column;
    gap: 2rem;
  }
  .project-grid__col {
    gap: 2rem;
  }
}

/* ==========================================================================
   Home - About me
   ========================================================================== */

.section-about {
  padding-block: 5rem;
  padding-inline: var(--container-padding-x);
}

.section-about__inner {
  max-width: 105rem;
  margin-inline: auto;
  padding: 3rem;
  background-color: var(--color-gray-soft);
  border-radius: var(--radius-lg);
}

.section-about__title {
  margin-bottom: 2rem;
  font-size: 2rem;
  font-weight: var(--fw-medium);
}

/* Variant: title sits above the gray card, aligned with its edge */
.section-about__title--outside {
  max-width: 105rem;
  margin: 0 auto 1.5rem;
}

/* Header row sitting above the gray card with title + right-aligned CTA */
.section-about__head {
  max-width: 105rem;
  margin: 0 auto 1.5rem;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
}

.section-about__head .section-about__title {
  margin: 0;
}

.section-about__head-cta {
  flex-shrink: 0;
  font-size: var(--fs-small);
  color: var(--color-text-muted);
}

.section-about__head-cta:hover {
  color: var(--color-text-strong);
}

@media (max-width: 767px) {
  .section-about__head {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }
}

.about-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  width: 100%;
}

.about-list__item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.75rem 1.25rem;
  padding-block: 1rem;
  border-bottom: 1px solid var(--color-gray-200);
}

.about-list__item:last-child {
  border-bottom: 0;
}

.about-list__title {
  flex: 1 1 auto;
  font-size: 1.125rem;
  font-weight: var(--fw-semibold);
  font-family: var(--font-kr);
  color: var(--color-text-strong);
}

.about-list__date {
  font-size: var(--fs-medium);
  color: var(--color-text);
}

@media (max-width: 991px) {
  .section-about__inner {
    padding: 3rem 2rem;
  }
}

/* ==========================================================================
   Simple numbered list (Service / Process pages)
   ========================================================================== */

.simple-list {
  display: flex;
  flex-direction: column;
  width: 100%;
}

.simple-list__item {
  display: flex;
  gap: 1.25rem;
  padding: 1.75rem 0;
  border-bottom: 1px solid var(--color-gray-200);
}

.simple-list__item:first-child {
  padding-top: 0.5rem;
}

.simple-list__item:last-child {
  border-bottom: 0;
  padding-bottom: 0.5rem;
}

.simple-list__num {
  flex: 0 0 1.75rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: var(--fw-regular);
  /* Match the title's first-line height so the cap-tops sit on the same line */
  line-height: 1.875rem;
  letter-spacing: 0.04em;
  color: var(--color-gray-400);
}

.simple-list__body {
  flex: 1;
  min-width: 0;
}

.simple-list__title {
  margin-bottom: 0.5rem;
  font-size: 1.25rem;
  font-weight: var(--fw-semibold);
  color: var(--color-text-strong);
  font-family: var(--font-kr);
}

/* Inline supporting meta beside a simple-list title (page count · duration) */
.simple-list__title-meta {
  margin-left: 0.875rem;
  font-family: var(--font-sans);
  font-size: var(--fs-small);
  font-weight: var(--fw-regular);
  letter-spacing: 0.02em;
  color: var(--color-gray-400);
  vertical-align: middle;
}

/* Inline link wrapping a word inside a simple-list title (e.g. "유지보수" -> Service page) */
.simple-list__title-link {
  font-weight: var(--fw-semibold);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
  text-decoration-color: var(--color-gray-300);
  transition: text-decoration-color var(--duration-fast) var(--ease);
}

.simple-list__title-link:hover {
  text-decoration-color: var(--color-black);
}

/* Inline CTA at the bottom of a simple-list item (per-tier "이 구성으로 문의하기") */
.simple-list__cta {
  margin: 1.25rem 0 0;
}

.simple-list__cta .button-link {
  font-size: var(--fs-medium);
  color: var(--color-text-strong);
}

.simple-list__cta .button-link:hover {
  color: var(--color-black);
}

/* Hero CTA paragraph (used on Service page Hero) */
.hero__cta {
  margin-top: 1.5rem;
}

.simple-list__desc {
  font-size: var(--fs-medium);
  color: var(--color-text);
  line-height: var(--lh-loose);
}

@media (max-width: 767px) {
  .simple-list__item {
    flex-direction: column;
    gap: 0.75rem;
    padding: 1.5rem 0;
  }
  .simple-list__num {
    flex: 0 0 auto;
    padding-top: 0;
  }
}

/* ==========================================================================
   Bottom CTA section (Service / Process pages)
   ========================================================================== */

.section-cta {
  padding-block: 5rem;
  padding-inline: var(--container-padding-x);
  text-align: center;
}

.section-cta__inner {
  max-width: 42rem;
  margin-inline: auto;
}

.section-cta__title {
  margin-bottom: 0.75rem;
  font-size: 1.75rem;
  font-weight: var(--fw-semibold);
  font-family: var(--font-kr);
  color: var(--color-text-strong);
}

.section-cta__desc {
  margin-bottom: 1.75rem;
  font-size: var(--fs-medium);
  line-height: var(--lh-relaxed);
  color: var(--color-text);
}

.section-cta__btn {
  font-size: var(--fs-medium);
  padding: 0.875rem 1.5rem;
}

/* ==========================================================================
   Generic content section (white bg) used on Service / Process pages
   ========================================================================== */

.section-block {
  padding-block: 5rem;
  padding-inline: var(--container-padding-x);
}

.section-block__inner {
  max-width: 105rem;
  margin-inline: auto;
}

.section-block__title {
  margin-bottom: 0.75rem;
  font-size: 2rem;
  font-weight: var(--fw-medium);
  line-height: var(--lh-tight);
}

/* Header row that puts the section title and a right-aligned CTA on one line */
.section-block__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.section-block__head .section-block__title {
  margin-bottom: 0;
}

.section-block__head-cta {
  flex-shrink: 0;
  font-size: var(--fs-small);
  color: var(--color-text-muted);
}

.section-block__head-cta:hover {
  color: var(--color-text-strong);
}

@media (max-width: 767px) {
  .section-block__head {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }
}

.section-block__sub {
  margin-bottom: 2.5rem;
  font-size: var(--fs-medium);
  color: var(--color-text);
  line-height: var(--lh-relaxed);
  max-width: 45rem;
}

/* Footnote-style note below a section-block content (e.g., 시간당 단가 안내) */
.section-block__note {
  margin: 2rem 0 0;
  font-size: var(--fs-small);
  color: var(--color-gray-400);
  line-height: var(--lh-relaxed);
}

/* ==========================================================================
   Approach grid — horizontal 3-column callouts (Service page)
   ========================================================================== */

.approach-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.approach-grid__item {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  min-width: 0;
}

/* Vertical dividers between adjacent items (2 lines total for 3 items) */
.approach-grid__item + .approach-grid__item {
  border-left: 1px solid var(--color-gray-300);
  padding-left: 2rem;
}

.approach-grid__num {
  font-family: var(--font-sans);
  font-size: var(--fs-small);
  font-weight: var(--fw-regular);
  letter-spacing: 0.04em;
  color: var(--color-gray-400);
}

.approach-grid__title {
  margin: 0;
  font-family: var(--font-kr);
  font-size: 1.125rem;
  font-weight: var(--fw-semibold);
  line-height: var(--lh-snug);
  color: var(--color-text-strong);
}

.approach-grid__desc {
  margin: 0;
  font-size: var(--fs-medium);
  line-height: var(--lh-loose);
  color: var(--color-text);
}

@media (max-width: 991px) {
  .approach-grid {
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }
  /* Reset vertical dividers when items stack vertically */
  .approach-grid__item + .approach-grid__item {
    border-left: 0;
    padding-left: 0;
  }
}

/* "전체 보기" link below a simple-list block on the home page previews */
.section-cta-link {
  margin-top: 2rem;
}

.section-cta-link .button-link {
  font-size: var(--fs-medium);
  color: var(--color-text-strong);
}

.section-cta-link .button-link:hover {
  color: var(--color-black);
}

/* ==========================================================================
   Tech Stack (home page preview)
   ========================================================================== */

.stack-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2.5rem 3rem;
}

.stack-grid__group {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  min-width: 0;
}

.stack-grid__label {
  font-family: var(--font-sans);
  font-size: var(--fs-small);
  font-weight: var(--fw-medium);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-gray-400);
}

@media (max-width: 991px) {
  .stack-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem 2rem;
  }
}

@media (max-width: 479px) {
  .stack-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

/* Sub-content (chip lists) inside simple-list items */
.simple-list__sub {
  margin-top: 1.25rem;
}

.simple-list__sub-label {
  display: block;
  margin-bottom: 0.625rem;
  font-size: var(--fs-small);
  letter-spacing: 0.02em;
  color: var(--color-gray-400);
}

.simple-list__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.simple-list__chips li {
  display: inline-flex;
  padding: 6px 12px;
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-pill);
  font-size: var(--fs-small);
  color: var(--color-text);
  background-color: var(--color-white);
  font-family: var(--font-kr);
}

.simple-list__chips--muted li {
  color: var(--color-text-muted);
  background-color: var(--color-gray-soft);
  border-color: transparent;
}

/* Inline badge inside a simple-list title (e.g., "별도 비용") */
.simple-list__badge {
  display: inline-flex;
  margin-left: 0.5rem;
  padding: 3px 9px;
  border-radius: var(--radius-pill);
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-200);
  font-size: var(--fs-tiny);
  font-weight: var(--fw-regular);
  font-family: var(--font-kr);
  color: var(--color-text-muted);
  vertical-align: middle;
  letter-spacing: 0;
}

/* Two-column scope grid on Service page */
.scope-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.scope-grid__col {
  background-color: var(--color-gray-soft);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
}

.scope-grid__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.scope-grid__title {
  font-size: 1.125rem;
  font-weight: var(--fw-semibold);
  font-family: var(--font-kr);
  color: var(--color-text-strong);
}

.scope-grid__hint {
  font-size: var(--fs-small);
  color: var(--color-gray-400);
}

@media (max-width: 767px) {
  .scope-grid { grid-template-columns: 1fr; gap: 1rem; }
  .scope-grid__col { padding: 1.75rem; }
}